Preparation, structure and magneto-caloric properties of MnFePGe compound - 文章详情页

作者：

Yue, Ming (Yue, Ming.) (学者：岳明) | Li, Zhi-Qiang (Li, Zhi-Qiang.) | Wang, Xiao-Lu (Wang, Xiao-Lu.) | Liu, Dan-Min (Liu, Dan-Min.) (学者：刘丹敏) | Zhang, Jiu-Xing (Zhang, Jiu-Xing.)

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摘要：

The　crystal　structure　and　magnetocaloric　effect　were　studied　for　bulk　Mn1.1Fe0.9P0.8Ge0.2　compound　prepared　by　mechanical　alloying　and　subsequent　spark　plasma　sintering　method.　The　compound　crystallized　in　a　single　phase　with　a　hexagonal　Fe2P-type　crystal　structure,　in　which　the　Mn　atoms　occupied　all　the　3g　sites　and　some　3f　sites,　the　Fe　atoms　occupied　the　rest　3f　sites,　and　P　and　the　Ge　atoms　occupied　the　2c　and　1b　sites　statistically.　Magnetic　measurements　made　on　the　compound　showed　a　first-order　ferromagnetic-paramagnetic　phase　transition　indicated　by　the　thermal　hysteresis　upon　cooling　and　heating　magnetization　process.　The　maximum　magnetic　entropy　change　of　the　compound　reached　as　high　as　61.8　J/(kgK)　in　a　field　change　from　0　to　5　T　at　251　K.

关键词：

Atoms Chromium compounds Crystal atomic structure Crystal structure Iron alloys Magnetocaloric effects Manganese alloys Spark plasma sintering

作者机构：

[ 1 ] [Yue, Ming]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Li, Zhi-Qiang]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Wang, Xiao-Lu]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Liu, Dan-Min]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Zhang, Jiu-Xing]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

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